10:00 AM - 10:15 AM
[2L03] Plasma driven permeation behavior of hydrogen isotope in tungsten under H-D-He mixed plasma exposure
Keywords:Tungsten, Plasma driven permeation, Irradiation defects, H-D-He mixture plasma
The influence of H and He on D plasma driven permeation (PDP) behavior in tungsten were studied by PDP experimental device as well as the impact of irradiation defects.
The results showed that the permeation rate of H was about 1.3 to 1.7 times as high as that of D. The H/D ratio was changed, and at H:D = 50:50, the permeation of HD was the maximum. In the H-D-He mixed exposure, the permeation flux and retention of D were decreased, indicating that the diffusion of D was suppressed by the formation of He bubbles. In this presentation, more detail experimental results related to permeation and diffusion behavior of hydrogen isotope in W will be discussed.
The results showed that the permeation rate of H was about 1.3 to 1.7 times as high as that of D. The H/D ratio was changed, and at H:D = 50:50, the permeation of HD was the maximum. In the H-D-He mixed exposure, the permeation flux and retention of D were decreased, indicating that the diffusion of D was suppressed by the formation of He bubbles. In this presentation, more detail experimental results related to permeation and diffusion behavior of hydrogen isotope in W will be discussed.